Age | Commit message (Collapse) | Author |
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Qemu provides a separate pci-bridge exclusively for multi-seat setups.
The normal pci-pci bridge ("-device pci-bridge") has 1b36:0001. The new
pci-bridge-seat was specifically added to simplify guest-side
multiseat configuration. It is identical to the normal pci-pci bridge,
except that it has a different id (1b36:000a) so we can match it and
configure multiseating automatically.
Make sure we always treat this as separate seat if we detect this, just
like other "Pluggable" devices.
(David: write commit-message)
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This is needed for generic DRM devices like the VirtualBox vboxvideo
driver, which exposes itself as a generic, ID-less DRM device at
/dev/dri/card0 (after applying this commit):
$ udevadm info --query=all --path \
/sys/devices/pci0000:00/0000:00:02.0/drm/card0
P: /devices/pci0000:00/0000:00:02.0/drm/card0
N: dri/card0
E: DEVNAME=/dev/dri/card0
E: DEVPATH=/devices/pci0000:00/0000:00:02.0/drm/card0
E: DEVTYPE=drm_minor
E: ID_FOR_SEAT=drm-pci-0000_00_02_0
E: ID_PATH=pci-0000:00:02.0
E: ID_PATH_TAG=pci-0000_00_02_0
E: MAJOR=226
E: MINOR=0
E: SUBSYSTEM=drm
E: TAGS=:master-of-seat:seat:uaccess:
E: USEC_INITIALIZED=59893
Without this patch, the capabilities for a seat on a VirtualBox
installation of systemd v219 incorrectly show it as non-graphical, even
though I can type these commands from an xterm:
$ loginctl show-seat seat0
Id=seat0
CanMultiSession=yes
CanTTY=yes
CanGraphical=no
…
https://bugs.freedesktop.org/show_bug.cgi?id=90822
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The udevadm utility is needed during early boot, so move it to
rootbindir to support split-/usr configurations.
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We currently enforce that seats are to be named in the form of
"seatXXX", i.e. need to begin with the 4 characters "seat". Thus,
"seat-master" would qualify as a seat name. As seat names are frequently
used as tags on devices, the "seat-master" tag might hence confuse
logind if the user decides to name a seat "seat-master".
Hence, avoid any ambuigity: let's rename the "seat-master" tag to
"master-of-seat".
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file logind.c: The seat is now activated by any device with udev tag "seat-master"
file 71-seat.rules.in: All framebuffer devices have this tag
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MIMO USB displays use a generic VID/PID for the hub component. With a
bit of trickery we can detect them by the VID/PID of the graphics
component.
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